Major Key
Tales of Suspense #39
First appearance and origin of Tony Stark/Iron Man.
View key issue guideMarvel & DC Key Comic Issues
Explore 83 collector guides covering major and minor Marvel & DC comic milestones.
1960s Key Comic Issues
Explore important Marvel and DC key issues published during the 1960s.
83 key issues from the 1960s
Major Key
Amazing Spider-Man #31
First appearances of Gwen Stacy and Harry Osborn.
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Major Key
Avengers #16
Landmark roster change introducing the 'Kooky Quartet' era.
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Major Key
X-Men #12
First appearance of Juggernaut and major Xavier family history.
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Minor Key
Amazing Spider-Man #34
Early rematch that develops Kraven's obsession with Spider-Man.
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